Tooth A – Upper right baby second molar
5th baby tooth back from the middle, upper right.
- International
- 55
- Palmer
- E
- Type
- Baby molar
- Roots
- 3
- Comes in
- 25–33 months
- Falls out
- 10–12 years
The last baby tooth at the back of the upper right row.
- In front: B upper right baby first molar
- Behind: nothing. It's the last tooth in the row.
- Same tooth on the other side: J upper left baby second molar
- Bites against: T lower right baby second molar
upper right second premolar (#4), which comes in after this tooth falls out at 10–12 years.
This tooth is A in the US and 55 internationally, where the 5 means the upper right quarter and the 5 is its place counting from the front.
In Palmer it's E, but in the US system E is the upper right baby central incisor.
American Dental Association 2024; Harris 2005; American Dental Association 2012; Ozcan et al. 2016; Tafti et al. 2023. Full titles are on the About page.